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Date: Mon, 17 Jun 2024 09:32:12 -0700
From: Alan Coopersmith <>
Subject: Fwd: [Security-announce][CVE-2024-4032] Incorrect IPv4 and IPv6
 private ranges

-------- Forwarded Message --------
Subject: 	[Security-announce][CVE-2024-4032] Incorrect IPv4 and IPv6 private ranges
Date: 	Mon, 17 Jun 2024 09:01:18 -0500
From: 	Seth Larson <>

The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the 'is_private' and 'is_global' properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries.

CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.

Severity: Medium



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